PurposeThis study explores (1) the impacts of COVID-19 on the environmental sustainability of Australian events; (2) the measures undertaken to minimise the impacts of COVID-19 on environmental sustainability; (3) the key impediments to incorporating COVID-Safe measures in an environmentally sustainable way; and (4) the expected long-term impact of the COVID-19 situation on the development of the environmental sustainability of the Australian events industry.Design/methodology/approachThe study follows a qualitative approach by undertaking semi-structured interviews with (N = 23) event industry professionals. The data collection phase took place between November 2020 and May 2021 and the study was completed in February 2022.FindingsAdverse environmental impacts included increased waste output and the stagnation of planned or existing environmental practices. The study reveals positive effects such as reduced carbon emission outputs and increased environmental awareness of event participants. Financial costs, time pressure, uncertainty and sourcing issues are significant impediments to organising events in an environmentally sustainable manner during a global pandemic situation.Practical implicationsUnderstanding how COVID-19 impacts the environmental sustainability of events will help the industry to preserve previous progress made, overcome similar obstacles during future crises, and capitalise on opportunities for positive environmental change.Originality/valueThis is the first study to examine the impact of the COVID-19 pandemic on the environmental sustainability practices of Australian events.